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Is always pos...

Question

Is always positive for a spontaneous chemical reaction :

A

Standard voltaic potential

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B

Entropy

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C

Enthalpy

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D

Reaction rate

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E

Gibbs free energy

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Solution

The correct option is A Standard voltaic potential
For any spontaneous reaction , standard voltaic potential which is $E^{0}$ is always positive.

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Q. Assertion :The thermodynamic factor which determines the spontaneity of a process is the free energy. For a process to be spontaneous the free energy must be -ve Reason: The change in free energy is related to the change in enthalpy and change in entropy. The change in entropy for a process must always be positive if it is spontaneous.

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